Sorry to bother but I have no idea how to fix this problem. Yesterday I got a Pioneer DV-393s Player . I connceted it to my computer since that is my tv ... it was going good. I was able to see but not hear. As I was moving some stuff the whole screen went blank. Now it won't let me get to the menu to change what I think I did wrong ... I press something call 'progressive'

something like that. NOW all I get is a word that says ' GUI' but no menu .... what can I do??
Please help!!
Thank you,
Laura